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Patent Searching and Data


Title:
CONTROLLING DEVICE OF PUSHER IN PIERCER
Document Type and Number:
Japanese Patent JPS594909
Kind Code:
A
Abstract:

PURPOSE: To push a billet into main rolls for biting it in good conditions, by controlling the driving current of a DC motor of a pusher used for billet in accordance with the changes of length, temperature, and material of the billet, in piercing the billet by biting it by the main rolls.

CONSTITUTION: The length, deformation resistance, and temperature of a billet 11 to be pierced are inputted to a push-feeding various-elements setting device 25 from respective setters 26, 27 and a temperature detector 28. Further, a push- feeding force, a push-feeding speed, and a pre-feeding length are inputted to the device 25 by setters 29, 30, 31. The device 25 controls driving of a DC motor 16 of a pusher 13 used for the billet 11 through a Leonard device 32 basing on these respective set values to give the prescribed push-feeding force, push-feeding speed, pre-feeding position, and position of standing by to the pusher 13 so that the billet 11 is correctly bitten by the main rolls 14 to pierce it by a plug bar 15.


Inventors:
OKAZAKI SHIYUUJI
HAYASHI YASUYUKI
Application Number:
JP11070782A
Publication Date:
January 11, 1984
Filing Date:
June 29, 1982
Export Citation:
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Assignee:
KAWASAKI STEEL CO
International Classes:
B21B19/04; B21B37/78; (IPC1-7): B21B19/04
Domestic Patent References:
JPS563124A1981-01-13
Attorney, Agent or Firm:
Shuji Shiokawa